Scalability and Fault Tolerance Mechanisms for a Network Medical Information System
Date Issued
1999-07-31
Date
1999-07-31
Author(s)
DOI
882219E002006
Abstract
It is due to the rapid development on
broadband network technology that the
medical information system is no longer
just conformed to a medical center or a
hospital itself. It is an inevitable trend to
construct the medical information system
on top of the Internet. With Distributed
Component Object Model (DCOM), we
make the source codes of medical information
system become object oriented and
reusable. Together with the next generation
broadband network environment, the
medical information spreads widely and
will serve in a real-time manner.
DCOM is proposed by Microsoft. It
extends Component Object Model (COM)
to support communication among objects
in different computers on the Internet.
Because DCOM is a seamless evolution of
COM, we can leverage our existing
investment in DCOM-based applications,
components, tools, and know-ledge to
move into the world of standards-based
distributed computing.
It has been shown that the latency
increases when the number of requests from clients or objects on the server
increases. Thus we will focus on the
scalability of the system, and propose and
implement new mechanisms for better
system performance. Then we will add
fault tolerance mechanisms in the system
to improve both the reliability and
availability. We'll first setup proper fault
model and then find out mechanisms of
fault-handling to provide a DCOM-based,
highly reliable network service.
It is foreseen that Internet applications
will be based on distributed
components in the near future. The
progress on this topic is very fast in the
industry, and we have to keep pace with it
in the academia. This project focuses on
the topics of scalability and fault tolerance
mechanisms. We are sure that it will be of
great help in increasing the performance
and reliability of a distributed computing
environment.
Subjects
COM
DCOM
object oriented
reliability
availability
scalability
fault
tolerance mechanism
tolerance mechanism
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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